-68.73% is the change from 291 to 91
Calculation steps:
[( 91 - 291 ) ÷ 291] x 100 = -68.73%
Formula
Percentage change = [(91 - 291) / 291] x 100
Subtract the new number by the original number
91 - 291 = -200
-200 ÷ 291 = -0.6872852233676976
-0.6872852233676976 x 100 = -68.73%