-83.53% is the change from 947 to 156
Calculation steps:
[( 156 - 947 ) ÷ 947] x 100 = -83.53%
Formula
Percentage change = [(156 - 947) / 947] x 100
Subtract the new number by the original number
156 - 947 = -791
-791 ÷ 947 = -0.8352692713833157
-0.8352692713833157 x 100 = -83.53%