-15.71% is the change from 821 to 692
Calculation steps:
[( 692 - 821 ) ÷ 821] x 100 = -15.71%
Formula
Percentage change = [(692 - 821) / 821] x 100
Subtract the new number by the original number
692 - 821 = -129
-129 ÷ 821 = -0.15712545676004872
-0.15712545676004872 x 100 = -15.71%