-9.6% is the change from 198 to 179
Calculation steps:
[( 179 - 198 ) ÷ 198] x 100 = -9.6%
Formula
Percentage change = [(179 - 198) / 198] x 100
Subtract the new number by the original number
179 - 198 = -19
-19 ÷ 198 = -0.09595959595959595
-0.09595959595959595 x 100 = -9.6%