331.51% is the change from 73 to 315
Calculation steps:
[( 315 - 73 ) ÷ 73] x 100 = 331.51%
Formula
Percentage change = [(315 - 73) / 73] x 100
Subtract the new number by the original number
315 - 73 = 242
242 ÷ 73 = 3.315068493150685
3.315068493150685 x 100 = 331.51%