-68.13% is the change from 637 to 203
Calculation steps:
[( 203 - 637 ) ÷ 637] x 100 = -68.13%
Formula
Percentage change = [(203 - 637) / 637] x 100
Subtract the new number by the original number
203 - 637 = -434
-434 ÷ 637 = -0.6813186813186813
-0.6813186813186813 x 100 = -68.13%