-54.9% is the change from 765 to 345
Calculation steps:
[( 345 - 765 ) ÷ 765] x 100 = -54.9%
Formula
Percentage change = [(345 - 765) / 765] x 100
Subtract the new number by the original number
345 - 765 = -420
-420 ÷ 765 = -0.5490196078431373
-0.5490196078431373 x 100 = -54.9%