-84.24% is the change from 641 to 101
Calculation steps:
[( 101 - 641 ) ÷ 641] x 100 = -84.24%
Formula
Percentage change = [(101 - 641) / 641] x 100
Subtract the new number by the original number
101 - 641 = -540
-540 ÷ 641 = -0.8424336973478939
-0.8424336973478939 x 100 = -84.24%