515.53% is the change from 161 to 991
Calculation steps:
[( 991 - 161 ) ÷ 161] x 100 = 515.53%
Formula
Percentage change = [(991 - 161) / 161] x 100
Subtract the new number by the original number
991 - 161 = 830
830 ÷ 161 = 5.15527950310559
5.15527950310559 x 100 = 515.53%