-56.86% is the change from 976 to 421
Calculation steps:
[( 421 - 976 ) ÷ 976] x 100 = -56.86%
Formula
Percentage change = [(421 - 976) / 976] x 100
Subtract the new number by the original number
421 - 976 = -555
-555 ÷ 976 = -0.5686475409836066
-0.5686475409836066 x 100 = -56.86%