-72.86% is the change from 947 to 257
Calculation steps:
[( 257 - 947 ) ÷ 947] x 100 = -72.86%
Formula
Percentage change = [(257 - 947) / 947] x 100
Subtract the new number by the original number
257 - 947 = -690
-690 ÷ 947 = -0.7286166842661035
-0.7286166842661035 x 100 = -72.86%