99.21% is the change from 253 to 504
Calculation steps:
[( 504 - 253 ) ÷ 253] x 100 = 99.21%
Formula
Percentage change = [(504 - 253) / 253] x 100
Subtract the new number by the original number
504 - 253 = 251
251 ÷ 253 = 0.9920948616600791
0.9920948616600791 x 100 = 99.21%