-68.19% is the change from 657 to 209
Calculation steps:
[( 209 - 657 ) ÷ 657] x 100 = -68.19%
Formula
Percentage change = [(209 - 657) / 657] x 100
Subtract the new number by the original number
209 - 657 = -448
-448 ÷ 657 = -0.6818873668188736
-0.6818873668188736 x 100 = -68.19%