-84.33% is the change from 402 to 63
Calculation steps:
[( 63 - 402 ) ÷ 402] x 100 = -84.33%
Formula
Percentage change = [(63 - 402) / 402] x 100
Subtract the new number by the original number
63 - 402 = -339
-339 ÷ 402 = -0.8432835820895522
-0.8432835820895522 x 100 = -84.33%