169.14% is the change from 81 to 218
Calculation steps:
[( 218 - 81 ) ÷ 81] x 100 = 169.14%
Formula
Percentage change = [(218 - 81) / 81] x 100
Subtract the new number by the original number
218 - 81 = 137
137 ÷ 81 = 1.691358024691358
1.691358024691358 x 100 = 169.14%