-84.04% is the change from 188 to 30
Calculation steps:
[( 30 - 188 ) ÷ 188] x 100 = -84.04%
Formula
Percentage change = [(30 - 188) / 188] x 100
Subtract the new number by the original number
30 - 188 = -158
-158 ÷ 188 = -0.8404255319148937
-0.8404255319148937 x 100 = -84.04%