-26.25% is the change from 842 to 621
Calculation steps:
[( 621 - 842 ) ÷ 842] x 100 = -26.25%
Formula
Percentage change = [(621 - 842) / 842] x 100
Subtract the new number by the original number
621 - 842 = -221
-221 ÷ 842 = -0.26247030878859856
-0.26247030878859856 x 100 = -26.25%