-20.88% is the change from 685 to 542
Calculation steps:
[( 542 - 685 ) ÷ 685] x 100 = -20.88%
Formula
Percentage change = [(542 - 685) / 685] x 100
Subtract the new number by the original number
542 - 685 = -143
-143 ÷ 685 = -0.20875912408759123
-0.20875912408759123 x 100 = -20.88%