-15.33% is the change from 261 to 221
Calculation steps:
[( 221 - 261 ) ÷ 261] x 100 = -15.33%
Formula
Percentage change = [(221 - 261) / 261] x 100
Subtract the new number by the original number
221 - 261 = -40
-40 ÷ 261 = -0.1532567049808429
-0.1532567049808429 x 100 = -15.33%