-7.23% is the change from 235 to 218
Calculation steps:
[( 218 - 235 ) ÷ 235] x 100 = -7.23%
Formula
Percentage change = [(218 - 235) / 235] x 100
Subtract the new number by the original number
218 - 235 = -17
-17 ÷ 235 = -0.07234042553191489
-0.07234042553191489 x 100 = -7.23%