20.32% is the change from 812 to 977
Calculation steps:
[( 977 - 812 ) ÷ 812] x 100 = 20.32%
Formula
Percentage change = [(977 - 812) / 812] x 100
Subtract the new number by the original number
977 - 812 = 165
165 ÷ 812 = 0.20320197044334976
0.20320197044334976 x 100 = 20.32%