137.19% is the change from 121 to 287
Calculation steps:
[( 287 - 121 ) ÷ 121] x 100 = 137.19%
Formula
Percentage change = [(287 - 121) / 121] x 100
Subtract the new number by the original number
287 - 121 = 166
166 ÷ 121 = 1.371900826446281
1.371900826446281 x 100 = 137.19%