-97.45% is the change from 274 to 7
Calculation steps:
[( 7 - 274 ) ÷ 274] x 100 = -97.45%
Formula
Percentage change = [(7 - 274) / 274] x 100
Subtract the new number by the original number
7 - 274 = -267
-267 ÷ 274 = -0.9744525547445255
-0.9744525547445255 x 100 = -97.45%