144.44% is the change from 81 to 198
Calculation steps:
[( 198 - 81 ) ÷ 81] x 100 = 144.44%
Formula
Percentage change = [(198 - 81) / 81] x 100
Subtract the new number by the original number
198 - 81 = 117
117 ÷ 81 = 1.4444444444444444
1.4444444444444444 x 100 = 144.44%