-24.5% is the change from 849 to 641
Calculation steps:
[( 641 - 849 ) ÷ 849] x 100 = -24.5%
Formula
Percentage change = [(641 - 849) / 849] x 100
Subtract the new number by the original number
641 - 849 = -208
-208 ÷ 849 = -0.24499411071849234
-0.24499411071849234 x 100 = -24.5%