-15.62% is the change from 973 to 821
Calculation steps:
[( 821 - 973 ) ÷ 973] x 100 = -15.62%
Formula
Percentage change = [(821 - 973) / 973] x 100
Subtract the new number by the original number
821 - 973 = -152
-152 ÷ 973 = -0.15621788283658788
-0.15621788283658788 x 100 = -15.62%