639.73% is the change from 73 to 540
Calculation steps:
[( 540 - 73 ) ÷ 73] x 100 = 639.73%
Formula
Percentage change = [(540 - 73) / 73] x 100
Subtract the new number by the original number
540 - 73 = 467
467 ÷ 73 = 6.397260273972603
6.397260273972603 x 100 = 639.73%