-66.79% is the change from 274 to 91
Calculation steps:
[( 91 - 274 ) ÷ 274] x 100 = -66.79%
Formula
Percentage change = [(91 - 274) / 274] x 100
Subtract the new number by the original number
91 - 274 = -183
-183 ÷ 274 = -0.6678832116788321
-0.6678832116788321 x 100 = -66.79%