-18.69% is the change from 947 to 770
Calculation steps:
[( 770 - 947 ) ÷ 947] x 100 = -18.69%
Formula
Percentage change = [(770 - 947) / 947] x 100
Subtract the new number by the original number
770 - 947 = -177
-177 ÷ 947 = -0.18690601900739176
-0.18690601900739176 x 100 = -18.69%