-15.1% is the change from 821 to 697
Calculation steps:
[( 697 - 821 ) ÷ 821] x 100 = -15.1%
Formula
Percentage change = [(697 - 821) / 821] x 100
Subtract the new number by the original number
697 - 821 = -124
-124 ÷ 821 = -0.1510353227771011
-0.1510353227771011 x 100 = -15.1%