-27.2% is the change from 853 to 621
Calculation steps:
[( 621 - 853 ) ÷ 853] x 100 = -27.2%
Formula
Percentage change = [(621 - 853) / 853] x 100
Subtract the new number by the original number
621 - 853 = -232
-232 ÷ 853 = -0.2719812426729191
-0.2719812426729191 x 100 = -27.2%