-68.24% is the change from 636 to 202
Calculation steps:
[( 202 - 636 ) ÷ 636] x 100 = -68.24%
Formula
Percentage change = [(202 - 636) / 636] x 100
Subtract the new number by the original number
202 - 636 = -434
-434 ÷ 636 = -0.6823899371069182
-0.6823899371069182 x 100 = -68.24%