-90.28% is the change from 638 to 62
Calculation steps:
[( 62 - 638 ) ÷ 638] x 100 = -90.28%
Formula
Percentage change = [(62 - 638) / 638] x 100
Subtract the new number by the original number
62 - 638 = -576
-576 ÷ 638 = -0.9028213166144201
-0.9028213166144201 x 100 = -90.28%