-2.53% is the change from 198 to 193
Calculation steps:
[( 193 - 198 ) ÷ 198] x 100 = -2.53%
Formula
Percentage change = [(193 - 198) / 198] x 100
Subtract the new number by the original number
193 - 198 = -5
-5 ÷ 198 = -0.025252525252525252
-0.025252525252525252 x 100 = -2.53%