194.12% is the change from 255 to 750
Calculation steps:
[( 750 - 255 ) ÷ 255] x 100 = 194.12%
Formula
Percentage change = [(750 - 255) / 255] x 100
Subtract the new number by the original number
750 - 255 = 495
495 ÷ 255 = 1.9411764705882353
1.9411764705882353 x 100 = 194.12%