-17.75% is the change from 766 to 630
Calculation steps:
[( 630 - 766 ) ÷ 766] x 100 = -17.75%
Formula
Percentage change = [(630 - 766) / 766] x 100
Subtract the new number by the original number
630 - 766 = -136
-136 ÷ 766 = -0.17754569190600522
-0.17754569190600522 x 100 = -17.75%