$scope.exportToExcel = function () {
                    function b64toBlob(b64Data, contentType, sliceSize) {
                        contentType = contentType || '';
                        sliceSize = sliceSize || 512;

                        var byteCharacters = atob(b64Data);
                        var byteArrays = [];

                        for (var offset = 0; offset < byteCharacters.length; offset += sliceSize) {
                            var slice = byteCharacters.slice(offset, offset + sliceSize);

                            var byteNumbers = new Array(slice.length);
                            for (var i = 0; i < slice.length; i++) {
                                byteNumbers[i] = slice.charCodeAt(i);
                            }

                            var byteArray = new Uint8Array(byteNumbers);

                            byteArrays.push(byteArray);
                        }

                        var blob = new Blob(byteArrays, { type: contentType });

                        return blob;
                    }

                    var contentType = 'binary/octet-stream';
                    var b64Data = data;

                    var convert = b64toBlob(b64Data, contentType);
                    // var blob = URL.createObjectURL(convert);
                    console.log("DOWNLOAD: " + URL.createObjectURL(convert))
                    saveAs(convert, "Report.xls");
                }