-3.19% is the change from 94 to 91
Calculation steps:
[( 91 - 94 ) ÷ 94] x 100 = -3.19%
Formula
Percentage change = [(91 - 94) / 94] x 100
Subtract the new number by the original number
91 - 94 = -3
-3 ÷ 94 = -0.031914893617021274
-0.031914893617021274 x 100 = -3.19%