-6.7% is the change from 642 to 599
Calculation steps:
[( 599 - 642 ) ÷ 642] x 100 = -6.7%
Formula
Percentage change = [(599 - 642) / 642] x 100
Subtract the new number by the original number
599 - 642 = -43
-43 ÷ 642 = -0.06697819314641744
-0.06697819314641744 x 100 = -6.7%