-66.45% is the change from 763 to 256
Calculation steps:
[( 256 - 763 ) ÷ 763] x 100 = -66.45%
Formula
Percentage change = [(256 - 763) / 763] x 100
Subtract the new number by the original number
256 - 763 = -507
-507 ÷ 763 = -0.6644823066841415
-0.6644823066841415 x 100 = -66.45%
Example