-78.57% is the change from 630 to 135
Calculation steps:
[( 135 - 630 ) ÷ 630] x 100 = -78.57%
Formula
Percentage change = [(135 - 630) / 630] x 100
Subtract the new number by the original number
135 - 630 = -495
-495 ÷ 630 = -0.7857142857142857
-0.7857142857142857 x 100 = -78.57%