-34.61% is the change from 783 to 512
Calculation steps:
[( 512 - 783 ) ÷ 783] x 100 = -34.61%
Formula
Percentage change = [(512 - 783) / 783] x 100
Subtract the new number by the original number
512 - 783 = -271
-271 ÷ 783 = -0.34610472541507026
-0.34610472541507026 x 100 = -34.61%