-34.87% is the change from 261 to 170
Calculation steps:
[( 170 - 261 ) ÷ 261] x 100 = -34.87%
Formula
Percentage change = [(170 - 261) / 261] x 100
Subtract the new number by the original number
170 - 261 = -91
-91 ÷ 261 = -0.3486590038314176
-0.3486590038314176 x 100 = -34.87%