183.95% is the change from 81 to 230
Calculation steps:
[( 230 - 81 ) ÷ 81] x 100 = 183.95%
Formula
Percentage change = [(230 - 81) / 81] x 100
Subtract the new number by the original number
230 - 81 = 149
149 ÷ 81 = 1.8395061728395061
1.8395061728395061 x 100 = 183.95%