-23.44% is the change from 128 to 98
Calculation steps:
[( 98 - 128 ) ÷ 128] x 100 = -23.44%
Formula
Percentage change = [(98 - 128) / 128] x 100
Subtract the new number by the original number
98 - 128 = -30
-30 ÷ 128 = -0.234375
-0.234375 x 100 = -23.44%