-36.11% is the change from 637 to 407
Calculation steps:
[( 407 - 637 ) ÷ 637] x 100 = -36.11%
Formula
Percentage change = [(407 - 637) / 637] x 100
Subtract the new number by the original number
407 - 637 = -230
-230 ÷ 637 = -0.36106750392464676
-0.36106750392464676 x 100 = -36.11%