-28.45% is the change from 587 to 420
Calculation steps:
[( 420 - 587 ) ÷ 587] x 100 = -28.45%
Formula
Percentage change = [(420 - 587) / 587] x 100
Subtract the new number by the original number
420 - 587 = -167
-167 ÷ 587 = -0.28449744463373083
-0.28449744463373083 x 100 = -28.45%