-17.98% is the change from 89 to 73
Calculation steps:
[( 73 - 89 ) ÷ 89] x 100 = -17.98%
Formula
Percentage change = [(73 - 89) / 89] x 100
Subtract the new number by the original number
73 - 89 = -16
-16 ÷ 89 = -0.1797752808988764
-0.1797752808988764 x 100 = -17.98%