-71.39% is the change from 423 to 121
Calculation steps:
[( 121 - 423 ) ÷ 423] x 100 = -71.39%
Formula
Percentage change = [(121 - 423) / 423] x 100
Subtract the new number by the original number
121 - 423 = -302
-302 ÷ 423 = -0.7139479905437353
-0.7139479905437353 x 100 = -71.39%