-33.93% is the change from 787 to 520
Calculation steps:
[( 520 - 787 ) ÷ 787] x 100 = -33.93%
Formula
Percentage change = [(520 - 787) / 787] x 100
Subtract the new number by the original number
520 - 787 = -267
-267 ÷ 787 = -0.3392630241423126
-0.3392630241423126 x 100 = -33.93%