-21.43% is the change from 154 to 121
Calculation steps:
[( 121 - 154 ) ÷ 154] x 100 = -21.43%
Formula
Percentage change = [(121 - 154) / 154] x 100
Subtract the new number by the original number
121 - 154 = -33
-33 ÷ 154 = -0.21428571428571427
-0.21428571428571427 x 100 = -21.43%