-21.06% is the change from 679 to 536
Calculation steps:
[( 536 - 679 ) ÷ 679] x 100 = -21.06%
Formula
Percentage change = [(536 - 679) / 679] x 100
Subtract the new number by the original number
536 - 679 = -143
-143 ÷ 679 = -0.2106038291605302
-0.2106038291605302 x 100 = -21.06%