-63.99% is the change from 636 to 229
Calculation steps:
[( 229 - 636 ) ÷ 636] x 100 = -63.99%
Formula
Percentage change = [(229 - 636) / 636] x 100
Subtract the new number by the original number
229 - 636 = -407
-407 ÷ 636 = -0.639937106918239
-0.639937106918239 x 100 = -63.99%