-13.31% is the change from 947 to 821
Calculation steps:
[( 821 - 947 ) ÷ 947] x 100 = -13.31%
Formula
Percentage change = [(821 - 947) / 947] x 100
Subtract the new number by the original number
821 - 947 = -126
-126 ÷ 947 = -0.133051742344245
-0.133051742344245 x 100 = -13.31%