-91.66% is the change from 947 to 79
Calculation steps:
[( 79 - 947 ) ÷ 947] x 100 = -91.66%
Formula
Percentage change = [(79 - 947) / 947] x 100
Subtract the new number by the original number
79 - 947 = -868
-868 ÷ 947 = -0.9165786694825766
-0.9165786694825766 x 100 = -91.66%