-18% is the change from 200 to 164
Calculation steps:
[( 164 - 200 ) ÷ 200] x 100 = -18%
Formula
Percentage change = [(164 - 200) / 200] x 100
Subtract the new number by the original number
164 - 200 = -36
-36 ÷ 200 = -0.18
-0.18 x 100 = -18%
Example