-13.81% is the change from 210 to 181
Calculation steps:
[( 181 - 210 ) ÷ 210] x 100 = -13.81%
Formula
Percentage change = [(181 - 210) / 210] x 100
Subtract the new number by the original number
181 - 210 = -29
-29 ÷ 210 = -0.1380952380952381
-0.1380952380952381 x 100 = -13.81%