-32.46% is the change from 958 to 647
Calculation steps:
[( 647 - 958 ) ÷ 958] x 100 = -32.46%
Formula
Percentage change = [(647 - 958) / 958] x 100
Subtract the new number by the original number
647 - 958 = -311
-311 ÷ 958 = -0.3246346555323591
-0.3246346555323591 x 100 = -32.46%