20.75% is the change from 771 to 931
Calculation steps:
[( 931 - 771 ) ÷ 771] x 100 = 20.75%
Formula
Percentage change = [(931 - 771) / 771] x 100
Subtract the new number by the original number
931 - 771 = 160
160 ÷ 771 = 0.20752269779507135
0.20752269779507135 x 100 = 20.75%