78.7% is the change from 507 to 906
Calculation steps:
[( 906 - 507 ) ÷ 507] x 100 = 78.7%
Formula
Percentage change = [(906 - 507) / 507] x 100
Subtract the new number by the original number
906 - 507 = 399
399 ÷ 507 = 0.7869822485207101
0.7869822485207101 x 100 = 78.7%