80% is the change from 520 to 936
Calculation steps:
[( 936 - 520 ) ÷ 520] x 100 = 80%
Formula
Percentage change = [(936 - 520) / 520] x 100
Subtract the new number by the original number
936 - 520 = 416
416 ÷ 520 = 0.8
0.8 x 100 = 80%
Example