-63.33% is the change from 420 to 154
Calculation steps:
[( 154 - 420 ) ÷ 420] x 100 = -63.33%
Formula
Percentage change = [(154 - 420) / 420] x 100
Subtract the new number by the original number
154 - 420 = -266
-266 ÷ 420 = -0.6333333333333333
-0.6333333333333333 x 100 = -63.33%