7.72% is the change from 920 to 991
Calculation steps:
[( 991 - 920 ) ÷ 920] x 100 = 7.72%
Formula
Percentage change = [(991 - 920) / 920] x 100
Subtract the new number by the original number
991 - 920 = 71
71 ÷ 920 = 0.07717391304347826
0.07717391304347826 x 100 = 7.72%