-34.1% is the change from 261 to 172
Calculation steps:
[( 172 - 261 ) ÷ 261] x 100 = -34.1%
Formula
Percentage change = [(172 - 261) / 261] x 100
Subtract the new number by the original number
172 - 261 = -89
-89 ÷ 261 = -0.34099616858237547
-0.34099616858237547 x 100 = -34.1%