-24.57% is the change from 639 to 482
Calculation steps:
[( 482 - 639 ) ÷ 639] x 100 = -24.57%
Formula
Percentage change = [(482 - 639) / 639] x 100
Subtract the new number by the original number
482 - 639 = -157
-157 ÷ 639 = -0.24569640062597808
-0.24569640062597808 x 100 = -24.57%