-18.27% is the change from 197 to 161
Calculation steps:
[( 161 - 197 ) ÷ 197] x 100 = -18.27%
Formula
Percentage change = [(161 - 197) / 197] x 100
Subtract the new number by the original number
161 - 197 = -36
-36 ÷ 197 = -0.18274111675126903
-0.18274111675126903 x 100 = -18.27%