51.48% is the change from 507 to 768
Calculation steps:
[( 768 - 507 ) ÷ 507] x 100 = 51.48%
Formula
Percentage change = [(768 - 507) / 507] x 100
Subtract the new number by the original number
768 - 507 = 261
261 ÷ 507 = 0.514792899408284
0.514792899408284 x 100 = 51.48%