-48.67% is the change from 637 to 327
Calculation steps:
[( 327 - 637 ) ÷ 637] x 100 = -48.67%
Formula
Percentage change = [(327 - 637) / 637] x 100
Subtract the new number by the original number
327 - 637 = -310
-310 ÷ 637 = -0.48665620094191525
-0.48665620094191525 x 100 = -48.67%