-22.22% is the change from 630 to 490
Calculation steps:
[( 490 - 630 ) ÷ 630] x 100 = -22.22%
Formula
Percentage change = [(490 - 630) / 630] x 100
Subtract the new number by the original number
490 - 630 = -140
-140 ÷ 630 = -0.2222222222222222
-0.2222222222222222 x 100 = -22.22%