-34.92% is the change from 779 to 507
Calculation steps:
[( 507 - 779 ) ÷ 779] x 100 = -34.92%
Formula
Percentage change = [(507 - 779) / 779] x 100
Subtract the new number by the original number
507 - 779 = -272
-272 ÷ 779 = -0.3491655969191271
-0.3491655969191271 x 100 = -34.92%