-87.38% is the change from 650 to 82
Calculation steps:
[( 82 - 650 ) ÷ 650] x 100 = -87.38%
Formula
Percentage change = [(82 - 650) / 650] x 100
Subtract the new number by the original number
82 - 650 = -568
-568 ÷ 650 = -0.8738461538461538
-0.8738461538461538 x 100 = -87.38%