-34.11% is the change from 768 to 506
Calculation steps:
[( 506 - 768 ) ÷ 768] x 100 = -34.11%
Formula
Percentage change = [(506 - 768) / 768] x 100
Subtract the new number by the original number
506 - 768 = -262
-262 ÷ 768 = -0.3411458333333333
-0.3411458333333333 x 100 = -34.11%