836.36% is the change from 77 to 721
Calculation steps:
[( 721 - 77 ) ÷ 77] x 100 = 836.36%
Formula
Percentage change = [(721 - 77) / 77] x 100
Subtract the new number by the original number
721 - 77 = 644
644 ÷ 77 = 8.363636363636363
8.363636363636363 x 100 = 836.36%