87.5% is the change from 304 to 570
Calculation steps:
[( 570 - 304 ) ÷ 304] x 100 = 87.5%
Formula
Percentage change = [(570 - 304) / 304] x 100
Subtract the new number by the original number
570 - 304 = 266
266 ÷ 304 = 0.875
0.875 x 100 = 87.5%
Example