-27.76% is the change from 771 to 557
Calculation steps:
[( 557 - 771 ) ÷ 771] x 100 = -27.76%
Formula
Percentage change = [(557 - 771) / 771] x 100
Subtract the new number by the original number
557 - 771 = -214
-214 ÷ 771 = -0.2775616083009079
-0.2775616083009079 x 100 = -27.76%