-63.14% is the change from 643 to 237
Calculation steps:
[( 237 - 643 ) ÷ 643] x 100 = -63.14%
Formula
Percentage change = [(237 - 643) / 643] x 100
Subtract the new number by the original number
237 - 643 = -406
-406 ÷ 643 = -0.6314152410575428
-0.6314152410575428 x 100 = -63.14%