-68.57% is the change from 630 to 198
Calculation steps:
[( 198 - 630 ) ÷ 630] x 100 = -68.57%
Formula
Percentage change = [(198 - 630) / 630] x 100
Subtract the new number by the original number
198 - 630 = -432
-432 ÷ 630 = -0.6857142857142857
-0.6857142857142857 x 100 = -68.57%