-68.41% is the change from 421 to 133
Calculation steps:
[( 133 - 421 ) ÷ 421] x 100 = -68.41%
Formula
Percentage change = [(133 - 421) / 421] x 100
Subtract the new number by the original number
133 - 421 = -288
-288 ÷ 421 = -0.684085510688836
-0.684085510688836 x 100 = -68.41%