-67.14% is the change from 636 to 209
Calculation steps:
[( 209 - 636 ) ÷ 636] x 100 = -67.14%
Formula
Percentage change = [(209 - 636) / 636] x 100
Subtract the new number by the original number
209 - 636 = -427
-427 ÷ 636 = -0.6713836477987422
-0.6713836477987422 x 100 = -67.14%