-34.51% is the change from 481 to 315
Calculation steps:
[( 315 - 481 ) ÷ 481] x 100 = -34.51%
Formula
Percentage change = [(315 - 481) / 481] x 100
Subtract the new number by the original number
315 - 481 = -166
-166 ÷ 481 = -0.34511434511434513
-0.34511434511434513 x 100 = -34.51%