694.87% is the change from 39 to 310
Calculation steps:
[( 310 - 39 ) ÷ 39] x 100 = 694.87%
Formula
Percentage change = [(310 - 39) / 39] x 100
Subtract the new number by the original number
310 - 39 = 271
271 ÷ 39 = 6.948717948717949
6.948717948717949 x 100 = 694.87%