-36.81% is the change from 997 to 630
Calculation steps:
[( 630 - 997 ) ÷ 997] x 100 = -36.81%
Formula
Percentage change = [(630 - 997) / 997] x 100
Subtract the new number by the original number
630 - 997 = -367
-367 ÷ 997 = -0.36810431293881646
-0.36810431293881646 x 100 = -36.81%