-35.84% is the change from 639 to 410
Calculation steps:
[( 410 - 639 ) ÷ 639] x 100 = -35.84%
Formula
Percentage change = [(410 - 639) / 639] x 100
Subtract the new number by the original number
410 - 639 = -229
-229 ÷ 639 = -0.35837245696400627
-0.35837245696400627 x 100 = -35.84%