-27.98% is the change from 168 to 121
Calculation steps:
[( 121 - 168 ) ÷ 168] x 100 = -27.98%
Formula
Percentage change = [(121 - 168) / 168] x 100
Subtract the new number by the original number
121 - 168 = -47
-47 ÷ 168 = -0.27976190476190477
-0.27976190476190477 x 100 = -27.98%