-71.05% is the change from 228 to 66
Calculation steps:
[( 66 - 228 ) ÷ 228] x 100 = -71.05%
Formula
Percentage change = [(66 - 228) / 228] x 100
Subtract the new number by the original number
66 - 228 = -162
-162 ÷ 228 = -0.7105263157894737
-0.7105263157894737 x 100 = -71.05%