-71.02% is the change from 314 to 91
Calculation steps:
[( 91 - 314 ) ÷ 314] x 100 = -71.02%
Formula
Percentage change = [(91 - 314) / 314] x 100
Subtract the new number by the original number
91 - 314 = -223
-223 ÷ 314 = -0.7101910828025477
-0.7101910828025477 x 100 = -71.02%