-78.65% is the change from 665 to 142
Calculation steps:
[( 142 - 665 ) ÷ 665] x 100 = -78.65%
Formula
Percentage change = [(142 - 665) / 665] x 100
Subtract the new number by the original number
142 - 665 = -523
-523 ÷ 665 = -0.7864661654135339
-0.7864661654135339 x 100 = -78.65%