-5.24% is the change from 210 to 199
Calculation steps:
[( 199 - 210 ) ÷ 210] x 100 = -5.24%
Formula
Percentage change = [(199 - 210) / 210] x 100
Subtract the new number by the original number
199 - 210 = -11
-11 ÷ 210 = -0.05238095238095238
-0.05238095238095238 x 100 = -5.24%