153.64% is the change from 343 to 870
Calculation steps:
[( 870 - 343 ) ÷ 343] x 100 = 153.64%
Formula
Percentage change = [(870 - 343) / 343] x 100
Subtract the new number by the original number
870 - 343 = 527
527 ÷ 343 = 1.5364431486880465
1.5364431486880465 x 100 = 153.64%