-27.47% is the change from 768 to 557
Calculation steps:
[( 557 - 768 ) ÷ 768] x 100 = -27.47%
Formula
Percentage change = [(557 - 768) / 768] x 100
Subtract the new number by the original number
557 - 768 = -211
-211 ÷ 768 = -0.2747395833333333
-0.2747395833333333 x 100 = -27.47%