-52.88% is the change from 643 to 303
Calculation steps:
[( 303 - 643 ) ÷ 643] x 100 = -52.88%
Formula
Percentage change = [(303 - 643) / 643] x 100
Subtract the new number by the original number
303 - 643 = -340
-340 ÷ 643 = -0.5287713841368584
-0.5287713841368584 x 100 = -52.88%