-85.26% is the change from 665 to 98
Calculation steps:
[( 98 - 665 ) ÷ 665] x 100 = -85.26%
Formula
Percentage change = [(98 - 665) / 665] x 100
Subtract the new number by the original number
98 - 665 = -567
-567 ÷ 665 = -0.8526315789473684
-0.8526315789473684 x 100 = -85.26%