-56.02% is the change from 955 to 420
Calculation steps:
[( 420 - 955 ) ÷ 955] x 100 = -56.02%
Formula
Percentage change = [(420 - 955) / 955] x 100
Subtract the new number by the original number
420 - 955 = -535
-535 ÷ 955 = -0.5602094240837696
-0.5602094240837696 x 100 = -56.02%