-34.21% is the change from 228 to 150
Calculation steps:
[( 150 - 228 ) ÷ 228] x 100 = -34.21%
Formula
Percentage change = [(150 - 228) / 228] x 100
Subtract the new number by the original number
150 - 228 = -78
-78 ÷ 228 = -0.34210526315789475
-0.34210526315789475 x 100 = -34.21%