80.17% is the change from 121 to 218
Calculation steps:
[( 218 - 121 ) ÷ 121] x 100 = 80.17%
Formula
Percentage change = [(218 - 121) / 121] x 100
Subtract the new number by the original number
218 - 121 = 97
97 ÷ 121 = 0.8016528925619835
0.8016528925619835 x 100 = 80.17%