311.11% is the change from 81 to 333
Calculation steps:
[( 333 - 81 ) ÷ 81] x 100 = 311.11%
Formula
Percentage change = [(333 - 81) / 81] x 100
Subtract the new number by the original number
333 - 81 = 252
252 ÷ 81 = 3.111111111111111
3.111111111111111 x 100 = 311.11%