-27.88% is the change from 642 to 463
Calculation steps:
[( 463 - 642 ) ÷ 642] x 100 = -27.88%
Formula
Percentage change = [(463 - 642) / 642] x 100
Subtract the new number by the original number
463 - 642 = -179
-179 ÷ 642 = -0.278816199376947
-0.278816199376947 x 100 = -27.88%