-21.35% is the change from 679 to 534
Calculation steps:
[( 534 - 679 ) ÷ 679] x 100 = -21.35%
Formula
Percentage change = [(534 - 679) / 679] x 100
Subtract the new number by the original number
534 - 679 = -145
-145 ÷ 679 = -0.21354933726067746
-0.21354933726067746 x 100 = -21.35%