-10.55% is the change from 199 to 178
Calculation steps:
[( 178 - 199 ) ÷ 199] x 100 = -10.55%
Formula
Percentage change = [(178 - 199) / 199] x 100
Subtract the new number by the original number
178 - 199 = -21
-21 ÷ 199 = -0.10552763819095477
-0.10552763819095477 x 100 = -10.55%