-89.05% is the change from 274 to 30
Calculation steps:
[( 30 - 274 ) ÷ 274] x 100 = -89.05%
Formula
Percentage change = [(30 - 274) / 274] x 100
Subtract the new number by the original number
30 - 274 = -244
-244 ÷ 274 = -0.8905109489051095
-0.8905109489051095 x 100 = -89.05%