-24.57% is the change from 643 to 485
Calculation steps:
[( 485 - 643 ) ÷ 643] x 100 = -24.57%
Formula
Percentage change = [(485 - 643) / 643] x 100
Subtract the new number by the original number
485 - 643 = -158
-158 ÷ 643 = -0.24572317262830481
-0.24572317262830481 x 100 = -24.57%