-82.41% is the change from 665 to 117
Calculation steps:
[( 117 - 665 ) ÷ 665] x 100 = -82.41%
Formula
Percentage change = [(117 - 665) / 665] x 100
Subtract the new number by the original number
117 - 665 = -548
-548 ÷ 665 = -0.8240601503759398
-0.8240601503759398 x 100 = -82.41%