-78.75% is the change from 781 to 166
Calculation steps:
[( 166 - 781 ) ÷ 781] x 100 = -78.75%
Formula
Percentage change = [(166 - 781) / 781] x 100
Subtract the new number by the original number
166 - 781 = -615
-615 ÷ 781 = -0.7874519846350833
-0.7874519846350833 x 100 = -78.75%