-60.18% is the change from 678 to 270
Calculation steps:
[( 270 - 678 ) ÷ 678] x 100 = -60.18%
Formula
Percentage change = [(270 - 678) / 678] x 100
Subtract the new number by the original number
270 - 678 = -408
-408 ÷ 678 = -0.6017699115044248
-0.6017699115044248 x 100 = -60.18%