-53.74% is the change from 910 to 421
Calculation steps:
[( 421 - 910 ) ÷ 910] x 100 = -53.74%
Formula
Percentage change = [(421 - 910) / 910] x 100
Subtract the new number by the original number
421 - 910 = -489
-489 ÷ 910 = -0.5373626373626373
-0.5373626373626373 x 100 = -53.74%