-30.21% is the change from 768 to 536
Calculation steps:
[( 536 - 768 ) ÷ 768] x 100 = -30.21%
Formula
Percentage change = [(536 - 768) / 768] x 100
Subtract the new number by the original number
536 - 768 = -232
-232 ÷ 768 = -0.3020833333333333
-0.3020833333333333 x 100 = -30.21%