-41.19% is the change from 420 to 247
Calculation steps:
[( 247 - 420 ) ÷ 420] x 100 = -41.19%
Formula
Percentage change = [(247 - 420) / 420] x 100
Subtract the new number by the original number
247 - 420 = -173
-173 ÷ 420 = -0.4119047619047619
-0.4119047619047619 x 100 = -41.19%