-30.16% is the change from 902 to 630
Calculation steps:
[( 630 - 902 ) ÷ 902] x 100 = -30.16%
Formula
Percentage change = [(630 - 902) / 902] x 100
Subtract the new number by the original number
630 - 902 = -272
-272 ÷ 902 = -0.30155210643015523
-0.30155210643015523 x 100 = -30.16%