67.65% is the change from 507 to 850
Calculation steps:
[( 850 - 507 ) ÷ 507] x 100 = 67.65%
Formula
Percentage change = [(850 - 507) / 507] x 100
Subtract the new number by the original number
850 - 507 = 343
343 ÷ 507 = 0.6765285996055227
0.6765285996055227 x 100 = 67.65%