-2.85% is the change from 947 to 920
Calculation steps:
[( 920 - 947 ) ÷ 947] x 100 = -2.85%
Formula
Percentage change = [(920 - 947) / 947] x 100
Subtract the new number by the original number
920 - 947 = -27
-27 ÷ 947 = -0.028511087645195353
-0.028511087645195353 x 100 = -2.85%