-20.1% is the change from 194 to 155
Calculation steps:
[( 155 - 194 ) ÷ 194] x 100 = -20.1%
Formula
Percentage change = [(155 - 194) / 194] x 100
Subtract the new number by the original number
155 - 194 = -39
-39 ÷ 194 = -0.20103092783505155
-0.20103092783505155 x 100 = -20.1%