619.72% is the change from 71 to 511
Calculation steps:
[( 511 - 71 ) ÷ 71] x 100 = 619.72%
Formula
Percentage change = [(511 - 71) / 71] x 100
Subtract the new number by the original number
511 - 71 = 440
440 ÷ 71 = 6.197183098591549
6.197183098591549 x 100 = 619.72%