-82.38% is the change from 664 to 117
Calculation steps:
[( 117 - 664 ) ÷ 664] x 100 = -82.38%
Formula
Percentage change = [(117 - 664) / 664] x 100
Subtract the new number by the original number
117 - 664 = -547
-547 ÷ 664 = -0.8237951807228916
-0.8237951807228916 x 100 = -82.38%