-43.29% is the change from 917 to 520
Calculation steps:
[( 520 - 917 ) ÷ 917] x 100 = -43.29%
Formula
Percentage change = [(520 - 917) / 917] x 100
Subtract the new number by the original number
520 - 917 = -397
-397 ÷ 917 = -0.43293347873500543
-0.43293347873500543 x 100 = -43.29%