-21.97% is the change from 346 to 270
Calculation steps:
[( 270 - 346 ) ÷ 346] x 100 = -21.97%
Formula
Percentage change = [(270 - 346) / 346] x 100
Subtract the new number by the original number
270 - 346 = -76
-76 ÷ 346 = -0.21965317919075145
-0.21965317919075145 x 100 = -21.97%