-31.75% is the change from 948 to 647
Calculation steps:
[( 647 - 948 ) ÷ 948] x 100 = -31.75%
Formula
Percentage change = [(647 - 948) / 948] x 100
Subtract the new number by the original number
647 - 948 = -301
-301 ÷ 948 = -0.31751054852320676
-0.31751054852320676 x 100 = -31.75%