-6% is the change from 200 to 188
Calculation steps:
[( 188 - 200 ) ÷ 200] x 100 = -6%
Formula
Percentage change = [(188 - 200) / 200] x 100
Subtract the new number by the original number
188 - 200 = -12
-12 ÷ 200 = -0.06
-0.06 x 100 = -6%
Example