25.3% is the change from 506 to 634
Calculation steps:
[( 634 - 506 ) ÷ 506] x 100 = 25.3%
Formula
Percentage change = [(634 - 506) / 506] x 100
Subtract the new number by the original number
634 - 506 = 128
128 ÷ 506 = 0.25296442687747034
0.25296442687747034 x 100 = 25.3%