-18.98% is the change from 669 to 542
Calculation steps:
[( 542 - 669 ) ÷ 669] x 100 = -18.98%
Formula
Percentage change = [(542 - 669) / 669] x 100
Subtract the new number by the original number
542 - 669 = -127
-127 ÷ 669 = -0.1898355754857997
-0.1898355754857997 x 100 = -18.98%