-32.66% is the change from 643 to 433
Calculation steps:
[( 433 - 643 ) ÷ 643] x 100 = -32.66%
Formula
Percentage change = [(433 - 643) / 643] x 100
Subtract the new number by the original number
433 - 643 = -210
-210 ÷ 643 = -0.3265940902021773
-0.3265940902021773 x 100 = -32.66%