-34.5% is the change from 774 to 507
Calculation steps:
[( 507 - 774 ) ÷ 774] x 100 = -34.5%
Formula
Percentage change = [(507 - 774) / 774] x 100
Subtract the new number by the original number
507 - 774 = -267
-267 ÷ 774 = -0.3449612403100775
-0.3449612403100775 x 100 = -34.5%