-16.62% is the change from 650 to 542
Calculation steps:
[( 542 - 650 ) ÷ 650] x 100 = -16.62%
Formula
Percentage change = [(542 - 650) / 650] x 100
Subtract the new number by the original number
542 - 650 = -108
-108 ÷ 650 = -0.16615384615384615
-0.16615384615384615 x 100 = -16.62%