-9.62% is the change from 208 to 188
Calculation steps:
[( 188 - 208 ) ÷ 208] x 100 = -9.62%
Formula
Percentage change = [(188 - 208) / 208] x 100
Subtract the new number by the original number
188 - 208 = -20
-20 ÷ 208 = -0.09615384615384616
-0.09615384615384616 x 100 = -9.62%