-63.84% is the change from 318 to 115
Calculation steps:
[( 115 - 318 ) ÷ 318] x 100 = -63.84%
Formula
Percentage change = [(115 - 318) / 318] x 100
Subtract the new number by the original number
115 - 318 = -203
-203 ÷ 318 = -0.6383647798742138
-0.6383647798742138 x 100 = -63.84%