829.63% is the change from 81 to 753
Calculation steps:
[( 753 - 81 ) ÷ 81] x 100 = 829.63%
Formula
Percentage change = [(753 - 81) / 81] x 100
Subtract the new number by the original number
753 - 81 = 672
672 ÷ 81 = 8.296296296296296
8.296296296296296 x 100 = 829.63%