Adjusts sheet storage loss to consistent rate

code/modules/persistence/storage/smartfridge.dm

@@ -48,14 +48,8 @@
 
 		// Delete some stacks if we want
 		if(stacks_go_missing)
-			var/fuzzy = rand(-5,5)
-			switch(count / max_amount)
-				if(0 to 1)
-					count -= 10+fuzzy // 1 stack or less, lose 10
-				if(1 to 10)
-					count -= max_amount+fuzzy // 1 to 10 stacks, lose a stack
-				if(10 to INFINITY)
-					count -= max_amount*3+fuzzy // 10+ stacks, lose 3 stacks
+			var/fuzzy = rand(55,65)
+			count = round(count*0.01*fuzzy) // loss of 35-45% with rounding down
 			if(count <= 0)
 				continue