-85.13% is the change from 639 to 95
Calculation steps:
[( 95 - 639 ) ÷ 639] x 100 = -85.13%
Formula
Percentage change = [(95 - 639) / 639] x 100
Subtract the new number by the original number
95 - 639 = -544
-544 ÷ 639 = -0.8513302034428795
-0.8513302034428795 x 100 = -85.13%