-17.65% is the change from 765 to 630
Calculation steps:
[( 630 - 765 ) ÷ 765] x 100 = -17.65%
Formula
Percentage change = [(630 - 765) / 765] x 100
Subtract the new number by the original number
630 - 765 = -135
-135 ÷ 765 = -0.17647058823529413
-0.17647058823529413 x 100 = -17.65%