-36.95% is the change from 636 to 401
Calculation steps:
[( 401 - 636 ) ÷ 636] x 100 = -36.95%
Formula
Percentage change = [(401 - 636) / 636] x 100
Subtract the new number by the original number
401 - 636 = -235
-235 ÷ 636 = -0.3694968553459119
-0.3694968553459119 x 100 = -36.95%