-63.45% is the change from 643 to 235
Calculation steps:
[( 235 - 643 ) ÷ 643] x 100 = -63.45%
Formula
Percentage change = [(235 - 643) / 643] x 100
Subtract the new number by the original number
235 - 643 = -408
-408 ÷ 643 = -0.6345256609642301
-0.6345256609642301 x 100 = -63.45%