531.21% is the change from 157 to 991
Calculation steps:
[( 991 - 157 ) ÷ 157] x 100 = 531.21%
Formula
Percentage change = [(991 - 157) / 157] x 100
Subtract the new number by the original number
991 - 157 = 834
834 ÷ 157 = 5.312101910828026
5.312101910828026 x 100 = 531.21%