-28.4% is the change from 588 to 421
Calculation steps:
[( 421 - 588 ) ÷ 588] x 100 = -28.4%
Formula
Percentage change = [(421 - 588) / 588] x 100
Subtract the new number by the original number
421 - 588 = -167
-167 ÷ 588 = -0.28401360544217685
-0.28401360544217685 x 100 = -28.4%