-78.99% is the change from 790 to 166
Calculation steps:
[( 166 - 790 ) ÷ 790] x 100 = -78.99%
Formula
Percentage change = [(166 - 790) / 790] x 100
Subtract the new number by the original number
166 - 790 = -624
-624 ÷ 790 = -0.789873417721519
-0.789873417721519 x 100 = -78.99%