-49.68% is the change from 771 to 388
Calculation steps:
[( 388 - 771 ) ÷ 771] x 100 = -49.68%
Formula
Percentage change = [(388 - 771) / 771] x 100
Subtract the new number by the original number
388 - 771 = -383
-383 ÷ 771 = -0.496757457846952
-0.496757457846952 x 100 = -49.68%