-70.23% is the change from 766 to 228
Calculation steps:
[( 228 - 766 ) ÷ 766] x 100 = -70.23%
Formula
Percentage change = [(228 - 766) / 766] x 100
Subtract the new number by the original number
228 - 766 = -538
-538 ÷ 766 = -0.7023498694516971
-0.7023498694516971 x 100 = -70.23%