-15.3% is the change from 758 to 642
Calculation steps:
[( 642 - 758 ) ÷ 758] x 100 = -15.3%
Formula
Percentage change = [(642 - 758) / 758] x 100
Subtract the new number by the original number
642 - 758 = -116
-116 ÷ 758 = -0.15303430079155672
-0.15303430079155672 x 100 = -15.3%