20% is the change from 780 to 936
Calculation steps:
[( 936 - 780 ) ÷ 780] x 100 = 20%
Formula
Percentage change = [(936 - 780) / 780] x 100
Subtract the new number by the original number
936 - 780 = 156
156 ÷ 780 = 0.2
0.2 x 100 = 20%
Example