-12.38% is the change from 646 to 566
Calculation steps:
[( 566 - 646 ) ÷ 646] x 100 = -12.38%
Formula
Percentage change = [(566 - 646) / 646] x 100
Subtract the new number by the original number
566 - 646 = -80
-80 ÷ 646 = -0.1238390092879257
-0.1238390092879257 x 100 = -12.38%