-85.08% is the change from 650 to 97
Calculation steps:
[( 97 - 650 ) ÷ 650] x 100 = -85.08%
Formula
Percentage change = [(97 - 650) / 650] x 100
Subtract the new number by the original number
97 - 650 = -553
-553 ÷ 650 = -0.8507692307692307
-0.8507692307692307 x 100 = -85.08%