-11.76% is the change from 646 to 570
Calculation steps:
[( 570 - 646 ) ÷ 646] x 100 = -11.76%
Formula
Percentage change = [(570 - 646) / 646] x 100
Subtract the new number by the original number
570 - 646 = -76
-76 ÷ 646 = -0.11764705882352941
-0.11764705882352941 x 100 = -11.76%