81.63% is the change from 539 to 979
Calculation steps:
[( 979 - 539 ) ÷ 539] x 100 = 81.63%
Formula
Percentage change = [(979 - 539) / 539] x 100
Subtract the new number by the original number
979 - 539 = 440
440 ÷ 539 = 0.8163265306122449
0.8163265306122449 x 100 = 81.63%