-75.87% is the change from 344 to 83
Calculation steps:
[( 83 - 344 ) ÷ 344] x 100 = -75.87%
Formula
Percentage change = [(83 - 344) / 344] x 100
Subtract the new number by the original number
83 - 344 = -261
-261 ÷ 344 = -0.7587209302325582
-0.7587209302325582 x 100 = -75.87%