-78.3% is the change from 765 to 166
Calculation steps:
[( 166 - 765 ) ÷ 765] x 100 = -78.3%
Formula
Percentage change = [(166 - 765) / 765] x 100
Subtract the new number by the original number
166 - 765 = -599
-599 ÷ 765 = -0.7830065359477124
-0.7830065359477124 x 100 = -78.3%