-90.98% is the change from 133 to 12
Calculation steps:
[( 12 - 133 ) ÷ 133] x 100 = -90.98%
Formula
Percentage change = [(12 - 133) / 133] x 100
Subtract the new number by the original number
12 - 133 = -121
-121 ÷ 133 = -0.9097744360902256
-0.9097744360902256 x 100 = -90.98%