-69.3% is the change from 228 to 70
Calculation steps:
[( 70 - 228 ) ÷ 228] x 100 = -69.3%
Formula
Percentage change = [(70 - 228) / 228] x 100
Subtract the new number by the original number
70 - 228 = -158
-158 ÷ 228 = -0.6929824561403509
-0.6929824561403509 x 100 = -69.3%