-66.52% is the change from 678 to 227
Calculation steps:
[( 227 - 678 ) ÷ 678] x 100 = -66.52%
Formula
Percentage change = [(227 - 678) / 678] x 100
Subtract the new number by the original number
227 - 678 = -451
-451 ÷ 678 = -0.6651917404129793
-0.6651917404129793 x 100 = -66.52%