-32.67% is the change from 955 to 643
Calculation steps:
[( 643 - 955 ) ÷ 955] x 100 = -32.67%
Formula
Percentage change = [(643 - 955) / 955] x 100
Subtract the new number by the original number
643 - 955 = -312
-312 ÷ 955 = -0.3267015706806283
-0.3267015706806283 x 100 = -32.67%