47.85% is the change from 512 to 757
Calculation steps:
[( 757 - 512 ) ÷ 512] x 100 = 47.85%
Formula
Percentage change = [(757 - 512) / 512] x 100
Subtract the new number by the original number
757 - 512 = 245
245 ÷ 512 = 0.478515625
0.478515625 x 100 = 47.85%