-3.54% is the change from 198 to 191
Calculation steps:
[( 191 - 198 ) ÷ 198] x 100 = -3.54%
Formula
Percentage change = [(191 - 198) / 198] x 100
Subtract the new number by the original number
191 - 198 = -7
-7 ÷ 198 = -0.03535353535353535
-0.03535353535353535 x 100 = -3.54%