621.74% is the change from 115 to 830
Calculation steps:
[( 830 - 115 ) ÷ 115] x 100 = 621.74%
Formula
Percentage change = [(830 - 115) / 115] x 100
Subtract the new number by the original number
830 - 115 = 715
715 ÷ 115 = 6.217391304347826
6.217391304347826 x 100 = 621.74%