-30.87% is the change from 460 to 318
Calculation steps:
[( 318 - 460 ) ÷ 460] x 100 = -30.87%
Formula
Percentage change = [(318 - 460) / 460] x 100
Subtract the new number by the original number
318 - 460 = -142
-142 ÷ 460 = -0.30869565217391304
-0.30869565217391304 x 100 = -30.87%