-26.86% is the change from 849 to 621
Calculation steps:
[( 621 - 849 ) ÷ 849] x 100 = -26.86%
Formula
Percentage change = [(621 - 849) / 849] x 100
Subtract the new number by the original number
621 - 849 = -228
-228 ÷ 849 = -0.26855123674911663
-0.26855123674911663 x 100 = -26.86%