-77.44% is the change from 133 to 30
Calculation steps:
[( 30 - 133 ) ÷ 133] x 100 = -77.44%
Formula
Percentage change = [(30 - 133) / 133] x 100
Subtract the new number by the original number
30 - 133 = -103
-103 ÷ 133 = -0.7744360902255639
-0.7744360902255639 x 100 = -77.44%