-86.12% is the change from 641 to 89
Calculation steps:
[( 89 - 641 ) ÷ 641] x 100 = -86.12%
Formula
Percentage change = [(89 - 641) / 641] x 100
Subtract the new number by the original number
89 - 641 = -552
-552 ÷ 641 = -0.8611544461778471
-0.8611544461778471 x 100 = -86.12%