1260.66% is the change from 61 to 830
Calculation steps:
[( 830 - 61 ) ÷ 61] x 100 = 1260.66%
Formula
Percentage change = [(830 - 61) / 61] x 100
Subtract the new number by the original number
830 - 61 = 769
769 ÷ 61 = 12.60655737704918
12.60655737704918 x 100 = 1260.66%