-18.24% is the change from 318 to 260
Calculation steps:
[( 260 - 318 ) ÷ 318] x 100 = -18.24%
Formula
Percentage change = [(260 - 318) / 318] x 100
Subtract the new number by the original number
260 - 318 = -58
-58 ÷ 318 = -0.18238993710691823
-0.18238993710691823 x 100 = -18.24%