-77.21% is the change from 566 to 129
Calculation steps:
[( 129 - 566 ) ÷ 566] x 100 = -77.21%
Formula
Percentage change = [(129 - 566) / 566] x 100
Subtract the new number by the original number
129 - 566 = -437
-437 ÷ 566 = -0.7720848056537103
-0.7720848056537103 x 100 = -77.21%