-17.18% is the change from 646 to 535
Calculation steps:
[( 535 - 646 ) ÷ 646] x 100 = -17.18%
Formula
Percentage change = [(535 - 646) / 646] x 100
Subtract the new number by the original number
535 - 646 = -111
-111 ÷ 646 = -0.17182662538699692
-0.17182662538699692 x 100 = -17.18%