-39.67% is the change from 121 to 73
Calculation steps:
[( 73 - 121 ) ÷ 121] x 100 = -39.67%
Formula
Percentage change = [(73 - 121) / 121] x 100
Subtract the new number by the original number
73 - 121 = -48
-48 ÷ 121 = -0.39669421487603307
-0.39669421487603307 x 100 = -39.67%