140.5% is the change from 121 to 291
Calculation steps:
[( 291 - 121 ) ÷ 121] x 100 = 140.5%
Formula
Percentage change = [(291 - 121) / 121] x 100
Subtract the new number by the original number
291 - 121 = 170
170 ÷ 121 = 1.4049586776859504
1.4049586776859504 x 100 = 140.5%