146.91% is the change from 81 to 200
Calculation steps:
[( 200 - 81 ) ÷ 81] x 100 = 146.91%
Formula
Percentage change = [(200 - 81) / 81] x 100
Subtract the new number by the original number
200 - 81 = 119
119 ÷ 81 = 1.4691358024691359
1.4691358024691359 x 100 = 146.91%