-62.67% is the change from 643 to 240
Calculation steps:
[( 240 - 643 ) ÷ 643] x 100 = -62.67%
Formula
Percentage change = [(240 - 643) / 643] x 100
Subtract the new number by the original number
240 - 643 = -403
-403 ÷ 643 = -0.6267496111975117
-0.6267496111975117 x 100 = -62.67%