-21.59% is the change from 792 to 621
Calculation steps:
[( 621 - 792 ) ÷ 792] x 100 = -21.59%
Formula
Percentage change = [(621 - 792) / 792] x 100
Subtract the new number by the original number
621 - 792 = -171
-171 ÷ 792 = -0.2159090909090909
-0.2159090909090909 x 100 = -21.59%