-32.39% is the change from 951 to 643
Calculation steps:
[( 643 - 951 ) ÷ 951] x 100 = -32.39%
Formula
Percentage change = [(643 - 951) / 951] x 100
Subtract the new number by the original number
643 - 951 = -308
-308 ÷ 951 = -0.323869610935857
-0.323869610935857 x 100 = -32.39%