-76.24% is the change from 665 to 158
Calculation steps:
[( 158 - 665 ) ÷ 665] x 100 = -76.24%
Formula
Percentage change = [(158 - 665) / 665] x 100
Subtract the new number by the original number
158 - 665 = -507
-507 ÷ 665 = -0.762406015037594
-0.762406015037594 x 100 = -76.24%